Bump version 2.0.0 -> 2.1.0 and document the node consolidation (Knowledge Base
Loader folded into Configuration) and configuration cleanup (trimmed inputs,
plain-language tooltips). Update the release-readiness checks.
Co-authored-by: kunail0804 <kunail0804@gmail.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>